FYI - You can download all versions of the app from the X-Rite website.
This may sound like an obvious question, but does the error occur only when reading an optimisation chart or when trying to read/measure the initial profiling target also?
What happens if you attempt to measure a much smaller optimisation target, say, perhaps 200 or 255 patches instead of 2,500 (!!) patches? Just out of curiosity, if your chart is all in grey, and in Lab, why bother having SO many thousands of patches? That would mean you’re measuring the Lab greyscale in increments of about 1/25th of an L* or about 0.04L* from one patch to the next. Doesn’t that sound rather extreme to you? Wouldn’t it suffice to have just 100-200 L* patches, especially if they’re all some shade of grey?
Or am I misinterpreting the title of the chart? Even if I am, so you actually see any kind of visual benefit from having such a huge optimisation chart? Have you compared say, optimising a specific profile with 100 patches and then going back and optimising the same profile but with 200 or 500 patches to see if there really is any tangible evidence that you’re not wasting your time, effort and money?
I’ve not yet tried optimising a profile but maybe you could get around the problem by reading the optimisation chart just as if it were any normal profiling target and then just sAve the file and load the saves file into the optimisation process? I’m guessing you must be able to read the initial target or you wouldn’t have a profile to optimise in the first place, right?
Hope you get it sorted Jeff.